feat: initialize unidesk platform

scripts/src/output.ts

@@ -0,0 +1,31 @@
+export interface JsonEnvelope<T> {
+  ok: boolean;
+  command: string;
+  data?: T;
+  error?: unknown;
+}
+
+export function emitJson<T>(command: string, data: T, ok = true): void {
+  const envelope: JsonEnvelope<T> = { ok, command, data };
+  safeStdoutWrite(`${JSON.stringify(envelope, null, 2)}\n`);
+}
+
+export function emitError(command: string, error: unknown): void {
+  const payload = error instanceof Error
+    ? { name: error.name, message: error.message, stack: error.stack ?? null }
+    : { message: String(error) };
+  const envelope: JsonEnvelope<never> = { ok: false, command, error: payload };
+  safeStdoutWrite(`${JSON.stringify(envelope, null, 2)}\n`);
+}
+
+function safeStdoutWrite(text: string): void {
+  try {
+    process.stdout.write(text);
+  } catch (error) {
+    if (typeof error === "object" && error !== null && "code" in error && (error as { code?: unknown }).code === "EPIPE") {
+      process.exitCode = 0;
+      return;
+    }
+    throw error;
+  }
+}